Frank: Have you got a link for those stocks? All I can find is the IMA replica guns which appear to have stocks not suitable for actual use. It looks like the handguards are attached by a screw down through the top. They say the metal parts are zinc - I read that as die-cast "pot metal." Funny thing I noticed is that their standard M1icon carbine replica gun has a stock with a profile very much like the stocks shown on the New Inland Carbine website. - Bob